Gas-collector.



L. M. ELLISON I GAS COLLECTOR.

APPLICATION FILED MAYJI, 1914.

1,128,669. Patentedfeb. 16, 1915.

I v 2a I i 1 i 7' 11 i 55 '13 i 2 i 57 J2 t I 35 J l I J6 i 7%ZZnep0peJ Z0 j g l LFMZZZZ'J/OH/ LEWIS M. ELLISON, OF CHICAGO, ILLINOIS.

GAS-COLLECTOR.

masses.

Specification of Letters Patent.

Patented Feb. 16, 1915.

Application filed May 11, 1914. Serial No. 837,855.

, To all whom it may concern:

i the purpose of analysis, as for the collection of gases from a furnace for the purpose of determining by their analysis the efiic ency of operation. For this particular service 1t is desirable to draw from the furnace or its flues and store gas at a uniform rate for a definite period of time. This is sometimes accomplished, as in the present 1nstance, by the use of a displacement tank which bemg filled with water is connected with the flue or chamber from which the gas is to be taken and the water is then drawn off from the tank at a uniform rate, the gas taking its place. In such devices lack of uniformity in the rate at which the gas 1s stored occurs because there is a variation in the flow of the water from the tank due to the decreasing head, and the principal ob ect of this invention is to provide for a uniform rate of storage within the collecting chamber notwithstanding this variation in the rate of the water discharge.

The invention has for a further object the general improvement of devices of this character.

In carrying out the invention the apparatus is provided with two gas recelving chambers, uniformly but inversely varying in horizontal cross sectional area from top to bottom, both chambers being adapted to be filled with water and having a common out let therefor; both being connected with the source of gas supplied and the chamber having its smaller end uppermost and being provided with an eduction duct to permit the withdrawal of gas therefrom. By this relative arrangement of tanks the ratio of the discharge of the water from the comartment having its smaller end uppermost will gradually increase relatively to the discharge from the other chamber as the level of the water is lowered, and, as the rate of discharge of the water will decrease with its head, the rate of displacement in the chamber having its smaller end uppermost,

may be made constant by a proper proportioning of the two chambers. The apparatus is also provided with means for pre venting the Stratification of the gases within the collectingchamber and with the liquid seal for the gas eduction duct.

The accompanying drawing shows a vertical central section of the device, showing one embodiment of the invention.

As here represented the displacement tank comprises a single shell 10, the body portion of which is of uniform horizontal cross sectional area, subdivided into two chambers 11, 12, by means of a downwardly tapering annular wall 13, depending from the top wall 14 of the shell. Below the shell 10 and open to both of its chambers is a sediment chamber 15. A drain duct 16 leads from the bottom of the sediment chamber, its lower end being constructed, as shown at 17, to provide for a slow discharge or drip of the water. This duct preferably discharges into a chamber 18 provided with an eduction nipple 19 located at a greater elevation than the drip port 17. The nipple 19 discharges into a waste pipe 20. A valve 21 is provided for closing the drip port 17'. The duct 16 is continued upwardly as a tube which terminates within the lower end of the chamber 12, thereby insuring a liquid seal between the two chambers of the tank while any water remains therein.

A nipple 22 attached to the top 14 of the tank is adapted to be connected to the source from which the gas is to be drawn by suitable piping. The nipple being provided with a duct 23 delivering to the tank compartment, 11 and also having branch 24 delivering to the tank compartment 12. A liquid gage 25 is provided for indicating the level of the liquid in the tank and may be of the ordinary glass tube type having its lower end connected with the sediment chamber 15 and its upper end connected with the duct 23.

A pipe 26 leads 'from within the tank chamber 11 through a sealing chamber 27 within which it may reciprocate, the cham ber 27 being filled with a liquid to prevent the entrance of air. The upper end of the tube 26 terminates within a chamber 28 from which leads a nipple 29 the inner end of which extends below the upper end of the pipe 26. The chamber 28 being partially filled with liquid so that normally the inner end of the nipple 29 is submerged, a liquid sealv is provided to prevent the escape of gas. A hand controlled plunger 30. reciprocating within a cylinder 31 projecting laterally from the lower portion of the chamber 28 provides means for lowering thev level of the liquid within that chamber to permit the escape of the gas through the nipple 29.

The. pipe. 26 is reciprocable in order that its lower end will be normally submerged: in the liquid in'the tank, but may be drawn upward to. permit the escape of gas and also to provide for the withdrawal of gas, if desired, from different elevations within the tank for the purpose of determining For the purpose of filling the tank with water, a pipe 33 is. provided, the upper end of which is as high as the top of the tank.

I This pipe: delivers to an air separating trap 3 1 having a vent 35-, and to a duct 3 6 delivering to the tank so as, not to disturb the sediment which may have accumulated within the chamber 15. Preferably, as shown, the duct 36 rises through the chamber 15, and to provide for the escape into this chamber of any sediment which may fall into the open end of the duct, a small portis located near its lower end. A drain pipe 37 is provided for carrying away water which may overflow from the filling pipe 33.

The chamber 12 when located as shown within the chamber 11, the outer walls of the latter being vertical, the horizontal cross sectional area of the chamber 11, increases downwardly from its upper end. The chambers 11, 12 being. connected at their lower ends, the, level of the liquid within them is of course the same. The rate at which this level is lowered by the dripping of the water from the duct 17 will gradually decrease as the. level is lowered and the head thereby decreased. As, the relative hori zontal cross sectional areas of the chambers 11 and 12 inversely vary with the altitude; it follows that as the level of the water is lowered ,a substantially increasing proper tion of the gas drawn, from the duct 23 is delivered to the chamber 11. By a proper proportioning of the chambers 11 and 12, this variation in the distribution of the gases betweenthe two chambers. will exactly correspond to the variation in the rate of discharge of the water and the rate at which the. gas is delivered to the chamber 11 will remain constant. V v r a If it be desired to ascertain the average rate of the withdrawal of the gases from v the furnace sectional area of, the chainber'12 and the in.-

creasing cross-sectional; area of the chamber. 11, toward the bottom of the tank, the rate.

of delivery of the gas to the. latter chamber remains constant. Before withdrawing any of the gas from thechamber 11 for the pure. pose of analysis, the dasher32 is preferably.

given. a few strokes for the purpose of in} suring. a complete admixture of, the. gases.

and their analysis. will, therefore, indicate the average. efliciency of the. furnace during;

the entire period covered by thete'st.

While the gas receiving compartments, 11,-

12 are shown as both bein g within thejshel'l' 10,, this is not of the essence of the; invention,

it being important only that their relative Q proper increase and decrease, respectively, in the cross sectional areas of the two chain,- I

proportions should be such that there is a v correspondingly, decreases? Nevertheless owing to the decreasing cross bers from their upper'endsdownwardly. f

I claim asv my invention,. .1. In a gas collector, inqcombination, a tank having a drip; nipple and a body'loff uniform; horizontal cross sectional, area, an

open bottomed downwardly, tapering com-Q partment within the tank, an induction duct. leading to the upper ends of both. compart.-.'- ments of the tank, and i an. eduction tube. leading from the tank outside of the named tapering compartment.

2. An upright tank having a drip nipple,

and a body of uniform,horizontalcross-sectional area and. having a partition extending downwardly'from its. top and being in:-

clined from the vertical, an induction duct delivering to theupper ends of both com partments, and an eduction tubev deliveringfrom the compartment wh ch increases in cross sectional area from its upper end.

8. A tank having a bodyof uniform hori zontal cross-sectional area and being di vlded into two compartments correspondingly inversely varying in horizontal crosssectional area from top to bottom, a drip.

nipple draining from both compartments,

an induction duct leading toboth compartments and an eduction tubeleading from the compartment the greatest areaof which, is, at its lower end. I

4. A pair of chambers correspondingly: nver ely-v r i ly. tap r p pp e common to both chambers, an induction duct leading to both chambers, and an eduction tube leading from the chamber having its smaller end uppermost.

5. An upright tank having its body of uniform diameter, a downwardly tapering chamber within the tank and being open to the chamber of the tank at its lower end, a drip nipple at the bottom of the tank, inlet ports at the top of the tank chamber and tapering chamber and an eduction tube for the tank chamber.

6. An upright tank having its body of uniform diameter, a downwardly tapering chamber within the tank and being open to the chamber of the tank at its lower end, a drip nipple at the bottom of the tank, inlet ports at the top of the tank chamber and tapering chamber and means for drawing ofi" the contents of the tank at varying elevations.

7. An upright tank having its body of uniform diameter, a downwardly tapering chamber within the tank and being open to the chamber of the tank at its lower end, a drip nipple at the bottom of the tank, inlet ports at the top of the tank chamber and tapering chamber and an eduction tube reciprocable through the top wall of the tank.

8. An upright tank having its body of uniform diameter, a downwardly tapering chamber within the tank and being open to the chamber of the tank at its lower end, a drip nipple at the bottom of the tank, inlet ports at the top of the tank chamber and tapering chamber and an eduction tube reciprocable through the top wall of the tank, and a dasher carried by the tube.

LEWIS M. ELLISON.

Witnesses Y E. M. KLATOHER, RUTH RINGLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

